Če v primeru vloge za podelitev homologacije družine motorjev homologacijski organ ugotovi, da glede na izbrani osnovni motor, predložena vloga ne predstavlja v popolnosti družino motorjev, opisano v Dodatku 2 Priloge II Direktive 97/68/ES, je treba skladno s členom 3(1) Direktive 97/68/ES predložiti drug in, po potrebi, dodaten osnovni motor, ki ga določi homologacijski organ.
In the case of an applicant for type-approval of an engine family, if the approval authority determines that, with regard to the selected parent engine, the submitted application does not fully represent the engine family described in Annex II, Appendix 2, to Directive 97/68/EC an alternative and, if necessary an additional parent engine which is determined by the approval authority shall be provided for approval according to Article 3(1) of Directive 97/68/EC.